Compile XDK code as C

It appears to be all C code (especially the non-C++ parts of the C
runtime, of course), so we'll compile it as such.

decompile/src/XDK/Win32.h

@@ -0,0 +1,70 @@
+/* JSRF Decompilation: XDK/Win32.h
+Definitions normally provided by Windows headers.
+*/
+
+#ifndef WIN32_H
+#define WIN32_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+// The famous Win32 typedefs
+typedef unsigned char    UCHAR;
+typedef          char     CHAR;
+typedef unsigned short   USHORT;
+typedef          short    SHORT;
+typedef unsigned int     UINT;
+typedef          int      INT;
+typedef unsigned long    ULONG;
+typedef          long     LONG;
+typedef unsigned __int64 ULONGLONG;
+typedef          __int64  LONGLONG;
+
+typedef unsigned char  BYTE;
+typedef unsigned short WORD;
+typedef unsigned long  DWORD;
+
+typedef void            VOID;
+typedef void          * LPVOID;
+typedef unsigned long   SIZE_T;
+typedef float           FLOAT;
+typedef int             BOOL;
+
+#define TRUE  1
+#define FALSE 0
+
+// 64-bit integer compatibility type
+union LARGE_INTEGER {
+    struct {
+        DWORD LowPart;
+        LONG HighPart;
+    } u;
+    LONGLONG QuadPart;
+};
+
+// Return codes
+typedef long HRESULT;
+
+#define ERROR_SUCCESS 0L
+#define E_OUTOFMEMORY 0x8007000EL
+
+// Standard Win32 functions
+VOID __stdcall Sleep(DWORD dwMilliseconds);
+
+LPVOID __stdcall VirtualAlloc(
+	LPVOID lpAddress,
+	SIZE_T dwSize,
+	DWORD flAllocationType,
+	DWORD flProtect
+);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif